— What does the fresh juice contain?— of the juice orange. Its very pure.A. Four-fifth;

问题补充：

— What does the fresh juice contain?

— of the juice orange. Its very pure.

A. Four-fifth; are

B. Four-fifths; are

C. Four-fifth; is

D. Four-fifths; is

答案：

A. Four-fifth; are

B. Four-fifths; are

C. Four-fifth; is

(答案→)D. Four-fifths; is

解析：考查分数的表示和主谓一致。分子超过1，分母用复数；主语是不可数名词juice，动词使用is。